Winding means for textile threads and support therefor



March 2, 1954 T. GRAUER 2,670,905 2 WINDING MEANS FOR TEXTILE THREADS AND SUPPORT THEREFOR Filed Feb. 13, 1951 7114mm! l FIG. 5

14 FIG-6 lNVENTOR-' g mm w' H m Patented Mar. 2, 1954 WINDING MEANS FOR TEXTILE THREADS AND SUPPORT THEREFOR Theodor Grauer, Goldach, Switzerland, assignor to Feldmuhle A. G., Rorschach, Switzerland Application February 13, 1951, Serial No. 210,754

6 Claims.

This invention relates to winding means for fresh-spun artificial silk and like textile filaments onto a. core on which they remain during after treatment and subsequent drying whereby they may shrink for the full amount without any risk of breaking. V

For such purpose it is'known in the art to provide variable-diameter bobbins, spools or cores for the fresh-spun artificial silk, for example, by forming the core bearing-face of rods which are radially movable outwardly or inwardly and fixable by special means extending between the stationary core flanges. Such cores solve the problem positively in making it possible to subject the package in slack condition to the various aftertreating steps and in ensuring at the same time that the package remains sealed laterally with respect to the core flanges. Such cores, however, possess certain disadvantages in that each single core (of which thousands are required) must comprise the rather complicated adjusting means which thus passes through all the aftertreating baths and drying chambers. Not only the costs of investment and maintenance are increased thereby, but also the wear and operating expenses, and further the weight of the cores is comparatively high on account of the special adjusting means.

The primary object of the present invention is to provide means for equalizing or compensating inaccuracies in the diameters of the winding cores.

According to the present invention two axially interdigitating movable parts are provided of which one serves as a core holder and the other as a winding core for the fresh-spun artificial silk or like thread material.

One form of this invention is illustrated in the accompanying drawing in which- Fig. 1 is a longitudinal section of a winding core taken on the line I-I of Fig. 2,

Fig. 2 is a cross-section of the core taken on the line II II of Fig. 1,

Fig. 3 shows the core mounted on or engaged by the holder, in longitudinal section taken on.

line III-HI of Fig. 2,

Fig. 4 is a longitudinal section of the holder which is collapsed for the purpose of stripping the package and its core from the holder, the core being partly indicated in dash-and-dot 1 lines,

Fig. 5 shows one of the bars in elevation, and Fig. 6 is an end view thereof.

Fig. 7 is a section through balls seen in Fig. 3. The core (spool or bobbin) shown per se in -with projections II Figs. 1 and 2 is of symmetrical structure, in contra-distinction to the form shown and described in Swiss Patent No. 215,116, to aiford amuch easier handling. The two flanges I and 2, which are interconnected by the web 3, are alike, and

the core I to 3 thus may be mounted on the holder (Fig. 3) from either side or end of the latter. The proper position for winding is always ensured by virtue of the core holder to be presently described.

When the core I, 2, 3 is slipped from the right end in Fig. 4 onto the collapsed holder or support, movable fiatbars 4 (Figs. 5 and 6) enter into longitudinal slots extending between adjacent core webs 3 (Fig. 2) so that the filaments can be wound on the projecting enlarged heads 5 of the bars 4, protruding beyond the webs 3.

The holder or support (Fig. 3) through its hub 6 is mounted on the spindle l of a winding frame and may be permanently secured thereto by means of a set screw-8. Stems 9 connect the hub 6 to a guide ring It. The latter is provided which serve as guides for the webs 3, when the core I, 2, 3 is to be received a and coupled to its holder, so that the bars 4 are protected against shock when mounted on the support.

To this end, it becomes always necessary to the core is being I clamp the cores I, 2, 3 in proper position, even though the cores substantially differ in diameter. For such purpose, the movable bars 4 (Fig. 5) have three inclined or cam faces I2, I3, I4 (Figs. 3 and 5) which correspond to three similar cam faces I2a, I3a, I4a provided on a cone member I6. The latter is axially movable on the axle pin I5 which is connected with the hub 6. When the cone I6 is pushed inwardly towards the hub 6 of the holder, the wedge faces I21 and I3a engage the corresponding faces of bars 4 and push the latter radially outwardly. When the cone I6, however, is pulled out to the position, as shown in Fig. 4, the wedge faces I4a thereof engage the bars 4 and pull the same radially inwardly.

After having mounted the core I, 2, 3 on the loose holder bars 4, the attendant pushes the knob I1 (Figs. 3 and 4) inwardly, i. e. to the left in Fig. 4, until a bushing 2i, which is moved along with the knob I1, is automatically locked, whereupon he may release the knob. In order to strip the core I-3, however, the knob I! is pulled outwardly, i. e. to the right in Fig. 3, the bushing 2| being unlocked in the first stage of such movement. The following elements are thus 'inserted between the knob I1 and cone I6: pin

I8, the stop bushing or sleeve 2|, springs 20 and stopped, while the knob H the flat bars 4 and the cone 16 with pin 18 cannot be moved further, and thus the springizfi is compressed. The tension of spring 20 therefore is increased and transmitted onto "the bars 4 and the core 1-3 via the cone IS. After'further inward movement of knob 11., the COrelhOlder is then automatically looked, as will be explained below.

When the knob i! is pushed inwardly,'it first takes along the ball or calls 2?. until the latter escape into recesses provided in the axle pin 15. .At -this moment, the movement of bushing .21 :is

is pushed furtherin- :wards, the spring 25 beingslightly slaeked, and

-;the .balls 22 being engaged in the .narrower bore tor knob .l'l, whereby the balls are prevented from .leavingzthe axle-pin recesses.

.A rubber sleeve 24 prevents the ingressrof acid .from the outside into the apparatus, and also prevents the pin i ii-from falling Out.

The pin i8 serves various purposes. ,First it isengaged in amilledslot 25 extending into'the axle pin vl5andthus prevents a rotation of cone .l-flaboutaxlepin l5. Second it limits the strokes of cone l6. Third it serves to limit the-rangeof vmovement ofknob l1 and of bushing 2| with respect to cone it. Fourthit locks the elements I! and .21 against rotation about axle pin 55, :which -is necessary as otherwise the balls 22 wouldnotengage the axle-pin recesses. Final- .ly, .thelpin l8 .serves for holding together .the .entire deviceandtherefore, only is inserted after .alltheelements have been. assembled. The .pin 18 could traverse the cone l6 diametrically, in which case the slots i9, .25 and 2! are to .;be

. continuous.

,The' helical spring .26 .is not as strong as .the

main spring 28 and serves, asmentionedbefore,

to urge knob ii to the ,left so that the latter keeps the .balls 22 trapped in their respective -recesses. The spring 26 thus serves .as locking springfor theelements 22. and 2 l .After the package has been fully .wound upon .theilatibars i and the inwardly sloping .faces .,of.theiflanges I and 2, thepackage and the core i-S have to be stripped from theholderstruo- .ture. 'For such purpose, .theholder haste-be withdrawn into the positionshown in Fig, ,4. The attendant pulls the knob ll from theposition shownin Fig. 3 to the right to that shown in Fig. #4, .and such movement is transmitted ontothe --various mechanisms. The first stage of such .movementoflknob ll serves to release the-balls ..22, i.-e.:iorzunlocking the bushing 2!. The large annular bore 23in knob ll permits the balls 22 -.to leave-the axle-pin recesses and to-slide axially alongthe axle-pin i5. Thespring 26 then pushes the bushing il and the balls 22to the right; and

slacks suddenly as the balls become disengaged -.until the left end of slot 21 in bushing 2| abuts against the pin is (Fig. 4). Thespring-Zli-then is only moderately tensioned. From this moment .onward, all the aforesaid .axia1ly:movalole;ele mentsare moved together to the rightasjlong was the slots I9 and 25 may bemovedrelativeto (the pinlt. The latter thus, pullsztheconemem- 4 ber 16 to the right, and the cone through its wedge faces it pulls the flat bars 4 inwardly. The core I -3 and its package then are left entirely free, and the rubber sleeve 24 is extended (Fig. 4). When the knob H is released by the attendant, it is slightly moved to the left again until its inside shoulder abuts against the balls :22.

.It is a special advantage .of .the core holder described that even cores (bobbins or spools) which have become distorted during use and throu h aitertreatments of the silk, may be firmly engaged thereon. In the lower portion of Fig. 3 is shown for example, how a core of maximum diameter is firmly held in position, while :in the :upper portion is shown a clamped pore of .rninimurn diameter. When comparing these two portions, the diiierent positions of the .various imovable parts are readily comprehensive. The balls 22 are still located in their cages andthe bushing 2i arrested, but the cone 1 6 in the case ofthemaximum-diameter core,;has been pushed further inwards through the spring ;20 than .inthe case of .the minimum-diameter core, such difference being represented by the distance V. The knob I! thus has further ad- .vanced ,to the left into the core by the amount .V, as also in this position of the cone it it ;is pushed against the pin 18 bythe spring 26.

-on winding the, p cka e, t sh k n 1laments exert a highpressure'on the flat bars .4, onaceount of which the cone is is; moved slightly to the right and the spring is slightly ;m ore compressed. Such movement and compression cometo a stop when the vpin l8 abuts ag a inst the right-hand endof theslot 21in bushingzl. The core 1P3 thenis held imposition on it s;hol d .er-,solely by the package built upbetween the ,fianges L2 and bearing on the heads ;5 of the ,fiathars 4. .When the ilatbarsdare retracted,

. as described above, the core l-3 and the reek- ;age .are entirel tree. or ;fioating with respect .to the holder. ,..A full core l.-.-3 thus may-be read- .ilyandecnveniently slipped from. the holder; and replaced by .an empty core. When slipping the .itdl-woundeore off the holder, the-risk of dam- .gageable, means. for ;c,onnect ing said support with said ;core,.an,d .for removal therefrom, said core ..comp.ri insw. s d flanges and a Web body int rs n etins es s, aid-w b bo y :having a plurality of longitudinalslots extendingfrom said .web body into said flanges to form recesses in said flanges, said support comprising a hub, an .axlerengasins said h h: sn meansai sl ppin the core on and oil the support, -a cor ie;str u cturamounted for axial movement on said axle and having a plurality of inclined wedgingiaces,

.-.a;-plurality of radially extending bars I adapted to ;proieet:through said -longitu dinal; s1ots and into said flange recesses to filament-supporting posi- ..tion,; sai d barsbeing proyidedentheir underside with a plurality pf inclined faces engageable-ior -,,cooperat ion with corresponding inclined faces 70;

providedomsaid conezstrueture when the latteiais axially moved into said filament-supporting posiption 01 ;-to --core-stripping position, a bushing mounted axiallymovable atwtheifree end of said ax1e;.f.or .slidingmovement thereon and having a 11 iity of. cut-outs, :a .knob mounted .for. axial movement along said bushing and having a plurality of axial bores of different diameters, means for limiting the movement of said knob and bushing, and a plurality of balls for disengageably locking said bushing to said axle; a first and a second helical spring of diiferent strength; said first spring being stronger than the second one and being confined within a space provided between the cone structure and the bushing to urge the former into engagement with said bars so as to push the latter outwardly into abutment against the core flanges into said filament-supporting position or pulling same inwardly into said core-stripping position, said second spring being confined in a bore of said knob between the latter and said bushing to act as a locking spring for said balls, whereby any inaccuracies in the diametral dimensions of the core may be eliminated in said filament-supporting position.

2. Winding means according to claim 1, in which the knob and the bushing are each provided with a radial slot, said limiting means being in the form of a pin which traverses said slots.

3. Winding means according to claim 2, wherein said pin is rigidly secured to said cone structure.

4. Winding means according to claim 3, where in said axle is provided with an elongated recess for engagement with said pin to hold together the cone structure and knob, as well as the bushing with said axle.

5. Winding means according to claim 4, wherein said axle and said bushing are provided with recesses for receiving and locking said balls in said filament-supporting position of said bars, said balls being displaceable for removal from said axle recesses to move said bars into said corestripping position.

6. Winding means for textile filaments comprising a core body having opposite end flanges and spaced apart web elements providing longitudinal slots between said web elements which are connected to said end flanges, a support for and separable from said core body and including an axle, a cone-shaped member seated on said axle for sliding movement thereto, bar means insertable in said slots of said core body, said bar means and said cone-shaped member being provided with respective engageable cam surfaces,

spring-urged manipulating means slidable on said axle in opposite directions and adapted to be coupled with said cone-shaped member to thereby move the surfaces of the latter relative to the surfaces of said bar means to bring about in one direction of said manipulating means and under spring action an engagement position of said bar means with and in another direction of said manipulating means a disengagement position of said bar means from said core body, whereby said bar means project beyond said slots of said core body in said engagement position, said spring-urged manipulating means including first and second spring means, said manipulating means comprising a tubular knob, a bushing arranged for slidable movement in said knob, said first spring mean being disposed between said bushing and said knob, means joining said knob and said bushing with said axle; said knob, said bushing and said axle being provided with registering slots through which said joining means extends, said second spring means being positioned on said axle and extending between said bushing and said cone-shaped member, and coupling means engageable in a recess provided in said axle to join said bushing with the latter and to thereby tension said second spring means for urging said cone-shaped member into said engagement position with said bar means, said first spring means being adapted to maintain said knob in position for preventing disengagement of said coupling means from said axle in said engagement position of said cone-shaped member with said :bar means.

THEODOR GRAUER.

References Cited in the file of this patent UNITED STATES PATENTS 

